Result summary component

I am finding new way to add shadow to the second box. Currently, if I add box-shadow it won't work because flexbox design makes the box's height = 100vh, leading to a weird shadow (looks like a frame)

Also, I hope there is a way that I can manipulate the background of the first box. The original design looks better with contrast in different places. I feel like there is better way to manipulate the color, but I just try to decrease or increase color range manually, which looks not as close as the original design.